Hi Karolina, kernel test robot noticed the following build warnings: [auto build test WARNING on drm-misc/drm-misc-next] [also build test WARNING on drm/drm-next drm-exynos/exynos-drm-next drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-tip/drm-tip linus/master v6.6 next-20231110] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Karolina-Stolarek/drm-ttm-tests-Add-tests-for-ttm_resource-and-ttm_sys_man/20231108-225515 base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next patch link: https://lore.kernel.org/r/cdc3571116060fed572b6e82623a9c9455c9b716.1699445194.git.karolina.stolarek%40intel.com patch subject: [PATCH v6 2/8] drm/ttm/tests: Add tests for ttm_tt config: x86_64-randconfig-122-20231110 (https://download.01.org/0day-ci/archive/20231110/202311102150.uqD1nk5m-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231110/202311102150.uqD1nk5m-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202311102150.uqD1nk5m-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> drivers/gpu/drm/ttm/tests/ttm_tt_test.c:232:25: sparse: sparse: symbol 'ttm_dev_empty_funcs' was not declared. Should it be static? vim +/ttm_dev_empty_funcs +232 drivers/gpu/drm/ttm/tests/ttm_tt_test.c 231 > 232 struct ttm_device_funcs ttm_dev_empty_funcs = { 233 .ttm_tt_create = ttm_tt_null_create, 234 }; 235 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki